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Study of loading policies for unequal strength shared--load system

机译：不等强度分担荷载系统的荷载策略研究

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摘要

This paper presents three policies for load assignment among unequal strength units based on f (l) maximizing the mean time between failure (MTBF) of the system (Policy A); (2) requiring all active units to fail simultaneously (Policy B); and (3) simply taking the same load for all active units (Policy C). The traditional shared-load k-out-ofnf G system performs satisfactorily if at least k of the total n units are up, with load being shared among the surviving units. One of the advantages in such a system is that the active units play the role of both an actuator and a sensor. Thus we have enough time to make corrective replacement of failed units while the system is still kept on duty. We use examples to show that policies A and B have almost the same MTBF (the difference is within l %), which is much more superior than Policy C. Two indices are used for the selection of valve k, with given number of total units. One is called the effectiveness factor, while the other is the tolerance factor. The former concerns with the effectiveness of load assignments among the surviving units. The latter deals with the time buffer when one more unit fails.
机译：本文基于f（l）提出了三种在不等强度单位之间分配负载的策略，该策略使系统的平均故障间隔时间（MTBF）最大化（策略A）； （2）要求所有活动单元同时失败（策略B）； （3）对所有活动单位简单地承担相同的负载（策略C）。如果总共n个单元中的至少k个用完了，则传统的共享负载k-out-ofnf G系统会令人满意地执行，并且在尚存的单元之间共享负载。在这种系统中的优点之一是，有源单元同时起到致动器和传感器的作用。因此，当系统仍保持运行状态时，我们有足够的时间对故障单元进行纠正性更换。我们通过示例说明，策略A和B的MTBF几乎相同（差异在1％以内），这比策略C优越得多。在给定的总单位数量下，两个指标用于选择阀k 。一个称为有效性因子，另一个称为容忍因子。前者与幸存单位之间的负荷分配的有效性有关。当另一个单元发生故障时，后者处理时间缓冲区。

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